The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2004
Filed:
Aug. 07, 2002
Michael Lindner, Leutenbach, DE;
Pawel Drabarek, Tiefenbronn, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention relates to a interferometric measuring device for measuring the shape especially of rough surfaces of a measured object (O), having a radiation-producing unit (SLD) emitting short-coherent radiation, a beam splitter (ST ) for forming a first and a second beam component (T , T ), of which the first is directed via an object light path to the measured object (O), and the second is directed via a reference light path to a reflecting reference plane (RSP), having a superposition element at which the radiation coming from the measured object (O) and the reference plane (RSP) are brought to superposition, and an image converter (BS), which receives the superposed radiation and sends corresponding signals to a device for evaluation, for the measurement to be taken, the optical path length of the object light path being changed relative to the optical path length of the reference light path. An exact measuring of object surfaces in narrow cavities, in three dimensions, having great accuracy, is made possible by providing in the optical light path an optical probe (OS, OSO) having an optical arrangement for producing at least one optical intermediate image.